[feature/dic] Introduce DI processors instead of abusing compiler passes

PHPBB3-10739

phpBB/includes/di/processor/interface.php

@@ -0,0 +1,23 @@
+<?php
+/**
+*
+* @package phpBB3
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+    exit;
+}
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+interface phpbb_di_processor_interface
+{
+    public function process(ContainerBuilder $container);
+}